Walter sydney ackroyd backhouse



March 3 w. s. A. B-AcK'fiousE 1,797,564

INTERNAL sTEkM SEQPARATOR Filed June 192s M M HRS/Mn 0 IN YE/VTOR BI Z S 0170208,:

P teiaedMar. 24, 1931' UNITED sTArEs WALTER SYDNEY AGKROYD BACKHOUSE, OF HILL TOP, \VILMSLOW, ENGLAND INTERNAL STEAM: SEPARATOR Application filed June 2, 1926, Serial No. 113,349, and in Great Britain June 4, 1925.

This invention relates to internal steam separators of the kind in which the steam on its way to the outlet is caused to pass through batteries of bafiles where moisture and sediment is deposited and passes directly to a drainage chamber and the heavy part of it thence to a sump or mud pipe from which it may be discharged at suitable intervals.

7 According to this invention, a number of 10 vertical baffles are employed in conjunction with a drainage chamber adapted to receive sediment from all units of the baffles and thus to carry it away from the dry-steam, which passes to its outlet along a passage or way that is separated from the drainage chamber by suitable partitions.

The invention will now be described with reference to the accompanying drawings, in

which Figure 1 is a front elevation of one construction of steam separator according to this invention,

Figure 2 is a plan with portions of the top plates shown removed to disclose the internal baffles, and

Figure 3 is a fractional end view of the left hand half of my device in section.

The separator as a whole comprises a pair of separating units A, A mounted co-axially with a central unit B provided with an outlet passage C for the dry-steam, the whole being securedwithin the boiler and above the water level by means of bolts D D, E E the heads of which respectively engage withlugs (Z (Z and e e of the separator. The flange 6 of the central unit B fits closely against the inner face of the boiler shell and forms a connection with the main steam outlet pipe.

a are vertical baffles arranged in groups or batteries and mounted between top plates 8, s and supporting ribs or members If t, which are formed or provided with. a drainage chamber F, the walls 9 g, of which are inclined downward (Figure 8) to 'form the bottom thereof.

The baflies of each longitudinal row may be connected together in any convenient manner well known in the art and are held in position laterally by angle irons o o and by the flanges w a: of plates y a. All the battles have their lower ends opening into one or the other of the drainage chambers F F, which may thus receive sediment from all units of the baffles and thus carry it away from the dry-steam. The drainage chambers F are thus each bounded at the top partly by plates 2, which also constitute the bottoms of horizontal dry-steam passages G leading to the passage C, and partly by the lower ends of the batteries of baffles a. In the lateral inclined walls 9 of the drainage chambers F non-return valves h are provided to permit excess of water to escape back into the boiler; and the lowermost portion of the said drainage chamber is fitted with connections i lead ing to a drain or mud pipe H which extends through the shell 7' of the boiler outside of which it is provided with a valve (not shown) to control the outlet therefrom, said pipe H having a uniform diameter all of its length to permit a quick and unrestricted removal of the sediment.

steam separator, comprising, in combination,

a substantially horizontal dry steam passage formed by solid top and bottom plates and two rows of vertical baflie units at the two sides thereof, said baifle units having tortuous vertical passages for the wet steam between them; a trough like bottom for'the separator into which the lower ends of all the vertical passages of the baflie units open, their top ends being closed; automatic water ejecting means connecting said trough with the space in the boiler, a sediment pipe in connection with said trough, leading to the outside for the intermittent discharge of the sediment therefrom by steam pressure.

2. An internal steam separator for a steam boiler of the class described, having a dry steam chamber and baflle units through which the steam may pass from the boiler into said chamber, a trough like bottom into which condensed water and sediment may collect from said baffle units, having a substantially horizontal center part and inclined walls, condensed water removing pipes arranged in the inclined sides of the bottom trough, having 1 outwardly opening valves therein, and sediment removal pipes inserted in the central horizontal portion of said bottom trough and being led to the outside of the boiler.

In testimony whereof I have signed my name to this specification.

WALTER SYDNEY ACKROYD EA Q QUSE- 

